Try Serenade, and if there are other nearby plants that keep your plant from drying out early in the morning after dewfall, tie them back. You want your plant to be in the breeze especially in a humid area. IF the buds have rot, don't smoke them!
Are you sure it's botyris and not powdery mildew? Grey mold is usually on buds, and PM is on leaves. Either way, treatment with a light mist of SMC leaf shine or neem oil on the leaves to prevent spores finding a place to take hold, and an application of Serenade (beneficial bacteria) to combat the pathogen.